android_log_timestamp returns the property leading letter,
it is better to return a clockid_t with android_log_clockid()
Bug: 23668800
Change-Id: I3c4e3e6b87f6676950797f1f0e203b44c542ed43
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).
A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. To reduce the contention
and chances for this problem separate out timestamp lock from is
loggable lock to reduce contention situations. Provide a best-guess
response if lock would fail in timestamp path.
Use a common lock() inline within each module, with a comment speaking
to the issues surrounding calling a function that has a mutex within
a signal handler.
ToDo: Hold off signals temporarily in mainline, restart when unblock.
Can not use pthread_sigmask(SIG_BLOCK,,) as it breaks AtCmd.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 25563384
Change-Id: I47e2c87c988c3e359eb9eef129c6a3a08e9eedef
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).
A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. Block signals while we
are locked. Separate out timestamp lock from is loggable lock to
reduce contention situations. Provide a best-guess response if
lock would fail in timestamp path.
Bug: 25563384
Change-Id: I6dccd6b99ebace1c473c03a785a35c63ed5c6a8a
if ro.logd.timestamp or persist.logd.timestamp are set to the value
monotonic then liblog writer, liblog printing and logd all switch to
recording/printing monotonic time rather than realtime. If reinit
detects a change for presist.logd.timestamp, correct the older entry
timestamps in place.
ToDo: A corner case condition where new log entries in monotonic time
occur before logd reinit detects persist.logd.timestamp, there
will be a few out-of-order entries, but with accurate
timestamps. This problem does not happen for ro.logd.timestamp
as it is set before logd starts.
NB: This offers a nano second time accuracy on all log entries
that may be more suitable for merging with other system
activities, such as systrace, that also use monotonic time. This
feature is for debugging.
Bug: 23668800
Change-Id: Iee6dab7140061b1a6627254921411f61b01aa5c2
- '-v epoch' prints seconds since Jan 1 1970
- '-v monotonic' print cpu seconds since start of device
- '-T sssss.mmm...' as alternate tail time format
NB: monotonic is a best estimate and may be out by a few ms
given the synchronization source clue accuracy.
Bug: 23668800
Change-Id: Ieb924b6d3817669c7e53beb9c970fb626eaad460
strcmp was 1/10 #2 behind find_property in __android_log_level(),
now virtually eliminated from performance profile.
Bug: 23685592
Change-Id: I3978886193af77e489c6d1728d6a26b7f53f8f2f
- '-v year' modifier adds the four digit year prefix
- '-v <timezone>' modifier sets and prints the timezone suffix
- Only promise in logcat to support UTC as a timezone since
all others are based on the configured environment
- '-v zone' modifier toggles the timezone suffix on or off
- '-T YYYY-MM-DD HH:MM:SS.mmm...' format is added
Bug: 23668700
Change-Id: I7521c1efb7455dc9a25434fce72a69a65dcf72ea
CYGWIN is not supported, USE_MINGW and HOST_OS==windows are being
replaced with LOCAL_..._windows variables.
Bug: 23566667
Change-Id: I3e4a1e4097dc994cf5abdce6939e83a91758fd75
* liblog does not use STL, don't link it.
* ASan runtime library depends on liblog, hence liblog can never be
sanitized.
Bug: 21785137
Change-Id: I1e97378c61d4d18d740287f5f0881427aa7cc227
- Add support for "log.tag" and "persist.log.tag" global
logging properties, effectively a runtime default minimum
logging level.
- Add a thread-safe single level cache plus selective logic for the
four properties being checked to help speed up logging decision
on subsequent identical calls.
- Using new __system_property_area_serial() to make for
efficient (<100ns) handling of cache misses. Despite adding
two new properties, we are 8 times faster on subsequent calls
even if the properties do not exist.
- A NULL or blank tag is no longer directed to return default,
it will check the pair of global logging properties first.
- Add liblog.is_loggable gTest
- Fixup liblog.android_logger_get_, allow no content in crash buffer
- Fixup liblog.max_payload, lowered logd priority increases latency
Bug: 19544788
Bug: 21696721
Change-Id: Ideb887755aa3f1fd14a2603bda1fe23cba49642c
- added printable format modifier:
logcat -v printable
- opencoded borrowed individual utf8 validity checking algorithm
from utf8_length() in libutils/Unicode.cpp
- if considered basic one-character ASCII, use popular \x escape
sequences for non-printable
- logprint convert to C comments to drop mixed-mode
Bug: 19000361
Change-Id: I122a5b8fb41216fc0bc816178c0b768f3df56586
On startup, check the current logging content, then grab logs from
that time forward rather than restarting from the beginning. Add
support for reading tail time down to the nano-second.
Bonus, permits us to create a logcatd logpersist daemon
Bug: 19608716
Change-Id: Iaab58de4c02b7f97c69de12cf954fedc2163059e
- Add additional 3 digits of time precision for time output
adding in the reporting of usec
- Remove trailing space in header file
Change-Id: Ifb560850b8e01080e126fbaeab640db71cce3eea
- On a N9 64-bit benchmark, the __android_log_is_loggable overhead
is roughly 500ns (1/2 of a syscall?)
Bug: 19544788
Bug: 17760225
Bug: 20416721
Change-Id: Ib9e4d06d96e1b19ca5d459e569ead451ef47a9c0
- If logd.tag.<tag> is not found, check if persist.logd.tag.<tag> is available
- Do not turn off the isLoggable functionality on "user" builds
Bug: 19544788
Bug: 17760225
Change-Id: I3fec67b547aa431438965519507033798398e1e1
__android_log_write() was just a special form of
__android_log_buf_write that used a default log ID and set the abort
message for fatal messages. Presumably the latter was intended to be
set for __android_log_buf_write as well.
Change-Id: I51cff7561a2754676b2088d95fa4f4505ac3c3c2
__write_to_log_null never retries initialization and only
made sense for the kernel logger. The user space logger
can come and go.
Bug: 19732485
Change-Id: Iac34ea1c52ec82db4ee0c2c73ba0950ace4d4dec
A regression after "liblog: Instrument logging of logd write drops"
where an empty payload would result in an insufficient iovec to
report the write drop.
Change-Id: Iffabcfbb0680898d7a42004700e638e9d940ff5f
If you rely on __builtin_trap, it's likely to use an illegal instruction,
which is a misleading way to abort. If we just call abort, it's more
immediately obvious that we've aborted.
Bug: 19644330
Change-Id: I63a962e4748aec7b019ea94b007593e478a3b61a
Fix host/sdk builds:
- Drop logprint from list of host products
- Drop <endian.h> for FAKE_LOG_DEVICE
Change-Id: I8aa854413ff6d809f0b04987cf913eb228e4213c
* changes:
logcat: remove dead label code
logcat: do not stop on unexpected log ID
Revert "logd: Add minimum time bucket statistics"
liblog: Instrument logging of logd write drops
We are changing the log read API to allow event notification
regarding logging system data loss. We would like these out
of band events to be reported.
Change-Id: I2bcd0ec7499b8139956613d72d7f62aff44b92ec
- If logger system is prostrated, send an event message with the
liblog tag from the associated UID and PID with a count of
dropped messages once logging is resumed.
- Added to the README a description of the error return values.
- Describe in the README the appropriate mitigations for dropped
messages.
- If the caller sees this message, then
/proc/sys/net/unix/max_dgram_qlen is likely too small
Change-Id: Iaf387b9e5e1b6aa93bebc7481f9e8353732e3229
Used to pull the Android log messages after a reboot. Adding
an ANDROID_LOG_PSTORE flag to the mode parameter in calls to
android_logger_list_alloc() and android_logger_list_alloc_time().
The side effects are that android_logger_clear() and
android_logger_list_read() will react with the user space
pstore driver. Forms a companion to the pstore console logs.
Change-Id: I7bb07b87b3bf73f059a21af3f810af37c7715b6d
Move away from using POSIX open(2) flags and introduce ANDROID_LOG_* flags to
replace them. Add security by preventing random mode flags from getting into
underlying POSIX calls. ANDROID_LOG_* flags overlap POSIX O_* flag definitions.
Change-Id: Ib32bb64c287e8bf150be62242e1ba46bb37839fc
- Enable build for 32 and 64 bit benchmark executables
- Fix some cosmetics issues in logd_write.c
Change-Id: I544446e5116607d7fec89171135f6e1eff6aebd8
- Add new liblog API __android_log_is_loggable(prio, tag, def)
- future plan to integrate this into the runtime checks and into
the logd daemon for filtration. Inert for now.
Bug: 17760225
Change-Id: I16395b4d42acc08f0209f55a1cbf87b0b2112898
This should probably be in libcutils instead, so code that needs to
care about Windows can use readv/writev.
Change-Id: I7c2ceec3f742cee0e44f69fd4c88459376bd0e08
Windows PE format doesn't have the same support for weak symbols
as ELF does.
The symbol android_log_id_to_name was strangely omitted from the
resulting Windows executable and the callsite where it was supposed
to be called was relaced with a different symbol, which caused a crash
in AAPT on Windows.
This change works due to a careful set of #ifdefs that ensure only one
definition of android_log_id_to_name is defined, but there are other
uses of __attribute__((weak)) which should be inspected.
Change-Id: I3b58076e31d9b28c5143773a170e9ffda9fa3815
This patch adds a new '-v color' option to logcat so that the output is
colored similar to the ones in DDMS. Simply type "adb logcat -v color"
to use it. Works well with bash in gnome-terminal. NO GUARANTEE IT WILL
WORK ON A NON xterm STYLE TERMINAL.
Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Change-Id: I9189c5f27fed991579edbcbc6834536eb8112152
Since android_set_abort_message() is quite helpful to the platform, it's
becoming promoted to a real header with a non-private name.
Bug: 17059126
Change-Id: I3ed12b66eb07f3a6a08366d5eee147809d9a3ce9
(cherry picked from commit 4047075da6)
Since android_set_abort_message() is quite helpful to the platform, it's
becoming promoted to a real header with a non-private name.
Bug: 17059126
Change-Id: I3ed12b66eb07f3a6a08366d5eee147809d9a3ce9
Bug: 16408818
These targets are no longer in use, since we have a proper way to create both
32-bit and 64-bit host libraries in a single build now.
Cherry-pick from AOSP: 03cc1f747c
Change-Id: Icd09f795acd220de5b5e956a8d8e1b4ab4864fa9
Bug: 16408818
These targets are no longer in use, since we have a proper way to create both
32-bit and 64-bit host libraries in a single build now.
Change-Id: Icd09f795acd220de5b5e956a8d8e1b4ab4864fa9
Socket file descriptors remain open across exec unless
SOCK_CLOEXEC is set. Enable this option, to avoid leaking
file descriptors.
See https://android-review.googlesource.com/53736 for a similar
problem with the old logging code.
Change-Id: I9e045d2291ae6680044ab86604f3ff2c55b5eaed
Implement LOG_EVENT_STRING, so that native code can create new
event log entries. This is needed to support logging SELinux denials
to the event log.
Change-Id: I6a269a832bc2f5e5da6c9dbd169ed2f901b49166
This is more general and will work for anyone's custom logging
code, as long as they use ANDROID_LOG_FATAL priority.
Change-Id: Iaf7fc0858fce04f3af407882a58ee5a827d50ddd
- if network read/write broken up, reassemble the pieces.
- Use a 20ms poll to check if a new fragment has been
sent by the other side.
- fixup logd-unit-tests to take a (simplified) fragment
from the liblog changes.
Bug: 14164765
Change-Id: I98ff87888c119e1e8349717646d0f733e8971bc8
- Add max_payload test
- Add dual_reader test
- Switch to EXPECT from ASSERT to increase test coverage
Bug: 13514601
Change-Id: I0e1c273e0ec430c0461e424731dbf166f2a3ce1b
- API change, return -errno on failure for log writing
- ENOTCONN results in a reconnection and a retry of the write
Change-Id: Ib0a90b730edeaa7e3a3c9797e4e1b0c81b6adb0a
1. socket() failures should skip close(), since sock is not an open fd
2. on other I/O related failures, preserve errno around the close() call
3. set errno to a meaningful value on check_log_success() failure
Change-Id: I0fb9e726ae5fee2f7b84344aa925e5159d57c360
Signed-off-by: Greg Hackmann <ghackmann@google.com>
- liblog android_logger_get_log_size and android_logger_get_readable_size
adjusted to return long instead of int because of -G flag extending range
NB: ifdef'd only for userdebug and eng builds
- liblog Add android_logger_[sg]et_prune_list and android_logger_set_log_size
- logcat Add -P, -p and -G flags
- logd Add LogWhiteBlackList and configurable log size
(cherry picked from commit 18a5432158)
Change-Id: I1572338c1b34bd968ad7867857ef708156ec3b6a
- structure packing
- move towards log_time from struct timespec
- extend log_time to cover differences between
log_time and struct timespec
Change-Id: I106ed0b609917306d170044054b5b32645f2a295
* Modify liblog to send all messages to the new syslog user
space daemon.
Original-Change-Id: I0ce439738cd921efb2db4c1d6a289a96bdbc8bc2
Original-Change-Id: If4eb0d09409f7e9be3eb4bb7017073dc7e931ab4
Signed-off-by: Nick Kralevich <nnk@google.com>
* Add a TARGET_USES_LOGD make flag for BoardConfig.mk to manage
whether logd is enabled for use or not.
* rename syslog to logd to avert confusion with bionic syslog
* Add fake log support back in
* prefilter for logging messages from logd
* Fill in timestamps at logging source
* update abstract log reader
* switch from using suffix for id to v3 format
* log a message when creating devices that a deprecated interface
is being utilized.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
(cherry pick from commit 099e2c1f6f706a8600c1cef74cce9066fc315480)
Change-Id: I47929a5432977a1d7235267a435cec0a7d6bd440
* changes:
libsysutils: SocketListener export release
libsysutils: Add iovec/runOnEachSocket
liblog: support struct logger_event_v2 format
liblog: update timestamp on NOTICE file
libcutils: resolve warning in iosched_policy.c
liblog: Add const pedantics
logcat: Add -T flag (-t w/o assumption of -d)
logcat: Add logcat test suite
liblog: Add cpu utilization test
liblog: Add liblog test suite
debuggerd: Support newline split in log messages
liblog: deprecate export LOGGER ioctl definitions
liblog: deprecate export of LOGGER_LOG_* defines
liblog: Add README
liblog: resolve build warning messages
liblog: high CPU usage from logcat
liblog: fix build again
liblog: drop use of sys/cdefs.h
liblog: git_master@964770 build problem
logcat: Incorporate liblog reading API
debuggerd: Incorporate liblog reading API
liblog: Interface to support abstracting log read
adb: deprecate legacy log service interface
adb: regression from Move list.c to inlines
liblog: whitespace cleanup
libcutils: bug str_parms.c:str_parms_get_float().
libcutils: UNUSED argument warnings
libsysutils: Get rid of warnings
libcutils: Move list.c to inlines on list.h
- followup to measure CPU utilization in liblog to
ensure this issue gets caught before a regression
passes into the labs. Threshold for failure is 1%.
(cherry picked from commit edadb2e719)
BUG: 12457855
Change-Id: I40568a72aeef2f554b19ad55f3dd3c02bc023f24
BUG: 12457855
- log_read.c poll timeout should be -1 instead of 0 when idling
(cherry picked from commit 080bbfab94)
Change-Id: I9082a15fae0fbf999c0ed516950a49d65a279298
log_read.c has to be in the target sources on all platforms, but
never needs to be in the host sources.
(cherry picked from commit 3c37fae4a4)
Change-Id: Ie0829f3f1daf16d151c401653dbef603b1c2f59d
Move the liblog headers to log/ instead of cutils/ to complete
the separation of libcutils and liblog. cutils/log.h still
exists and includes log/log.h in order to support the many existing
modules that use cutils/log.h.
Change-Id: I2758c9f4aedcb809ca7ba8383d0f55041dd44345
File descriptors remain open across an exec unless FD_CLOEXEC is
set. Add O_CLOEXEC to the open() call to prevent file descriptor
leakage.
In particular, the following program will eventually run out of
file descriptors:
int main(int argc, char **argv) {
printf("===== entering main =====\n");
ALOGW("entering main");
system("ls -l /proc/self/fd/");
execv(argv[0], argv);
printf("exec failed\n");
return -1;
}
Change-Id: I5be43ab3b9f82a05f242b1f586454c50568af388
Changing __android_log_write so the tag warns users relying on the
tag to direct log output to the radio buffer to instead use Rlog or RLOG.
Change-Id: I04b7bb5e620c1ab22b9b495382a252b539947e28
Both libraries are needed to build four shared libraries in 64-bit
for 64-bit emulator with "-gpu on"
lib64OpenglRender.so
lib64EGL_translator.so
lib64GLES_CM_translator.so
lib64GLES_V2_translator.so
Change-Id: If57f72d4661a74f1d5e537568881f39132e0b43d
1. In printf, use "%zu" for variable of type size_t
2. Print tid in %5d
3. Make type of pid/tid in AndroidLogEntry and logger_entry consistent
Change-Id: I3e3d9536ee58823f349a4734ae093d30eabe1bfe
Testing:
The following test cases all passed and generated log entries:
# echo -n '\03foo\0bar\0' > /dev/log/main
# echo -n '\03\0bar\0' > /dev/log/main
# echo -n '\03\0a\0' > /dev/log/main
The following entries were successfully processed by
logcat but produced no log entries:
# echo -n '\03\0\0' > /dev/log/main
# echo -n '\03a\0\0' > /dev/log/main
# echo -n '\03b\0\0' > /dev/log/main
Also tested the pathological error condition:
cat /dev/urandom > /dev/log/main
which produced many "+++ LOG: malformed log entry" errors.
Bug: 5478600
Change-Id: I53bc79507242dcfc14445746c29edf47be0a90b4
When parsing log entries which may have embedded \0s, it's
possible for entry->messageLen to not be the actual
length of the string in entry->message. Detect this condition.
Bug: 5417417
Change-Id: I712cac7696af7831e24765b5a1b345d6ff5fb407
Invoking LOG_ASSERT, LOG_ALWAYS_FATAL or LOG_ALWAYS_FATAL_IF variadic macros
without the printf format string arg caused compilation errors because the
variable arg list (__VA_ARGS__) was eventually passed to
__android_log_assert() func in place of a required parameter. This error
only occured in debug builds because LOG_ASSERT() is a no-op in release
builds. This change allows debug builds to succeed.
Change-Id: I7e7b7de3e501133468ce083e0e0d6e699dd59667
Signed-off-by: Chris Pearson <christopherx.c.pearson@intel.com>
snprintf has a weird return value. It returns what would have been written given a large enough buffer.
In the case that the prefix is longer then our buffer(128), it messes up the calculations below possibly causing heap corruption.
To avoid this we double check and set the length at the maximum (size minus null byte
